/*
 * Licensed to The Apereo Foundation under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 *
 * The Apereo Foundation licenses this file to you under the Educational
 * Community License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License
 * at:
 *
 *   http://opensource.org/licenses/ecl2.txt
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 */
'use strict';

angular.module('adminNg.directives')
.directive('preSelectFrom', [ 'underscore',
  function (_) {

    return {
      restrict: 'A',
      require: ['ngModel'],
      template: '',
      replace: false,
      link: function ($scope, $element, $attr, ngModel) {

        var unregister = $scope.$watch($attr.preSelectFrom, function (options) {
          if (!_.isUndefined(options)) {

            // fix angular resource objects
            if (_.has(options, 'toJSON')) {
              options = options.toJSON();
            }

            if (_.size(options) === 1 && _.size(ngModel) > 0) { // supports objects and arrays
              ngModel[0].$setViewValue(options[_.keys(options)[0]], 'myevent');
              unregister();
            }
          }
        });
      }
    };
  }]);
